When the Boat Comes In S02E11 - The Way It Was in Murmansk

Stan Liddell, local Labour party secretary, asks Jack to speak on behalf of their candidate at the forthcoming election, Geordie Watson. Jack agrees on condition that Matt is made a councillor and gives a rousing speech, also bribing voters to ensure Watson's victory. The elections cause an argument between Jessie and Arthur. Matt's new girlfriend, Sarah Lytton, becomes housekeeper for him and Jack.